MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 8f4cb07a4333f15fa8e585b00ef08ab329fda9fbc3802fdbdf579c194096ba9d. While MalwareBazaar tries to identify whether the sample provided is malicious or not, there is no guarantee that a sample in MalwareBazaar is malicious.

Database Entry

RemcosRAT

Vendor detections: 12

Intelligence 12 IOCs YARA 19 File information Comments

SHA256 hash:	8f4cb07a4333f15fa8e585b00ef08ab329fda9fbc3802fdbdf579c194096ba9d
SHA3-384 hash:	fe0ff1279fcf1a600b38be75a4b4481838a9f08728cd5e99160a392f1764fe5e4aad74961cbc1a12b8df6eea65baf9e7
SHA1 hash:	bfe1fd750967a09f44a88aeb8b888d0d5a7a2b33
MD5 hash:	e93af87a127ca6be2f0f043a2070300c
humanhash:	sweet-salami-delaware-yankee
File name:	Commission Policy.js
Download:	download sample
Signature	RemcosRAT Create hunting rule
File size:	1'263'843 bytes
First seen:	2025-11-05 16:30:11 UTC
Last seen:	Never
File type:	js
MIME type:	text/plain
ssdeep	12288:fzaaPdSTjA5yXetplEqUuWBnmcjWEDL0w3Hf/5tKZVjOPSe2ZVJiCJ6:bawSTjpfXr3DLFKZZwSe27wt
Threatray	72 similar samples on MalwareBazaar
TLSH	T10F4518FFC8DC616B35E3EF12A27ABABC463525D6AD22551E208137B32E0C146F702657
Magika	javascript
Reporter	abuse_ch
Tags:	js RAT RemcosRAT

Intelligence

File Origin

# of uploads :

# of downloads :

102

Origin country :

Vendor Threat Intelligence

Verdict:

Malicious

Score:

94.9%

Link:

https://cyber-fortress.com/docs/result/index.php?id=690a9a2b9942f1282ecc2751

Tags:

obfuscate xtreme shell

Verdict:

Malicious

Threat level:

10/10

Confidence:

100%

Tags:

anti-vm base64 evasive fingerprint obfuscated powershell powershell repaired

Link:

https://www.filescan.io/uploads/690b7badf6e1cf47e35265b0/reports/046e7ef6-86a5-4651-bca0-36c755e4ab4c/overview

Verdict:

Unknown

Link:

https://www.hybrid-analysis.com/sample/8f4cb07a4333f15fa8e585b00ef08ab329fda9fbc3802fdbdf579c194096ba9d

Verdict:

Malicious

File Type:

First seen:

2025-11-04T20:33:00Z UTC

Last seen:

2025-11-05T12:00:00Z UTC

Hits:

~1000

Detections:

Trojan.VBS.SAgent.sb Trojan.JS.SAgent.sb HEUR:Trojan.Script.Generic HEUR:Trojan.PowerShell.Tesre.sb Trojan-Downloader.JS.Cryptoload.sb Trojan.Win32.Shellcode.sb

Link:

https://opentip.kaspersky.com/8f4cb07a4333f15fa8e585b00ef08ab329fda9fbc3802fdbdf579c194096ba9d/results?tab=lookup

Result

Threat name:

Remcos

Detection:

malicious

Classification:

troj.expl.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1808720

Signature

.NET source code contains a sample name check

.NET source code references suspicious native API functions

Bypasses PowerShell execution policy

C2 URLs / IPs found in malware configuration

Creates processes via WMI

Detected Remcos RAT

Found malware configuration

Found suspicious powershell code related to unpacking or dynamic code loading

Joe Sandbox ML detected suspicious sample

Loading BitLocker PowerShell Module

Malicious sample detected (through community Yara rule)

Sigma detected: Base64 Encoded PowerShell Command Detected

Sigma detected: PowerShell Base64 Encoded FromBase64String Cmdlet

Sigma detected: PowerShell Base64 Encoded IEX Cmdlet

Sigma detected: Remcos

Sigma detected: Suspicious PowerShell Parameter Substring

Sigma detected: WScript or CScript Dropper

Suricata IDS alerts for network traffic

Suspicious execution chain found

Suspicious powershell command line found

Windows Scripting host queries suspicious COM object (likely to drop second stage)

Wscript starts Powershell (via cmd or directly)

Yara detected Powershell decode and execute

Yara detected Remcos RAT

Yara detected UAC Bypass using CMSTP

Behaviour

Behavior Graph:

Download SVG

Score:

99%

Verdict:

Malware

File Type:

SCRIPT

Link:

https://malprob.io/report/8f4cb07a4333f15fa8e585b00ef08ab329fda9fbc3802fdbdf579c194096ba9d

Gathering data

Detection:

remcos

Link:

https://mwdb.cert.pl/sample/8f4cb07a4333f15fa8e585b00ef08ab329fda9fbc3802fdbdf579c194096ba9d/

Threat name:

Script-JS.Trojan.GootLoader

Status:

Malicious

First seen:

2025-11-04 23:46:45 UTC

File Type:

Text

AV detection:

8 of 23 (34.78%)

Threat level:

5/5

Detection(s):

Malicious file

Link:

https://check.spamhaus.org/check/?searchterm=r5gla6sdgpyv7khfqwya54ekwmu73kp3yoac7w67k6obsqewxkoq._file

Verdict:

malicious

Label(s):

donutloader

remcos

Result

Malware family:

n/a

Score:

10/10

Tags:

execution

Link:

https://tria.ge/reports/251105-tz4pzawmaq/

Behaviour

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

Command and Scripting Interpreter: JavaScript

Command and Scripting Interpreter: PowerShell

Badlisted process makes network request

Process spawned unexpected child process

Malware family:

Remcos

Verdict:

Malicious

Link:

https://www.vmray.com/analyses/_mb/8f4cb07a4333/report/overview.html

Please note that we are no longer able to provide a coverage score for Virus Total.

Threat name:

Malicious File

Score:

1.00

Link:

https://yomi.yoroi.company/submissions/8f4cb07a4333f15fa8e585b00ef08ab329fda9fbc3802fdbdf579c194096ba9d

YARA Signatures

MalwareBazaar uses YARA rules from several public and non-public repositories, such as YARAhub and Malpedia. Those are being matched against malware samples uploaded to MalwareBazaar as well as against any suspicious process dumps they may create. Please note that only results from TLP:CLEAR rules are being displayed.

Rule name:	cobalt_strike_tmp01925d3f Create hunting rule
Author:	The DFIR Report
Description:	files - file ~tmp01925d3f.exe
Reference:	https://thedfirreport.com

Rule name:	CP_Script_Inject_Detector Create hunting rule
Author:	DiegoAnalytics
Description:	Detects attempts to inject code into another process across PE, ELF, Mach-O binaries

Rule name:	DebuggerCheck__API Create hunting rule
Reference:	https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara

Rule name:	DetectEncryptedVariants Create hunting rule
Author:	Zinyth
Description:	Detects 'encrypted' in ASCII, Unicode, base64, or hex-encoded

Rule name:	Disable_Defender Create hunting rule
Author:	iam-py-test
Description:	Detect files disabling or modifying Windows Defender, Windows Firewall, or Microsoft Smartscreen

Rule name:	FreddyBearDropper Create hunting rule
Author:	Dwarozh Hoshiar
Description:	Freddy Bear Dropper is dropping a malware through base63 encoded powershell scrip.

Rule name:	golang_bin_JCorn_CSC846 Create hunting rule
Author:	Justin Cornwell
Description:	CSC-846 Golang detection ruleset

Rule name:	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM Create hunting rule
Author:	ditekSHen
Description:	Detects Windows exceutables bypassing UAC using CMSTP COM interfaces. MITRE (T1218.003)

Rule name:	pe_detect_tls_callbacks Create hunting rule

Rule name:	pe_no_import_table Create hunting rule
Description:	Detect pe file that no import table

Rule name:	REMCOS_RAT_variants Create hunting rule

Rule name:	Remcos_unpacked_PulseIntel Create hunting rule
Author:	PulseIntel
Description:	Remcos Payload

Rule name:	SUSP_PS1_JAB_Pattern_Jun22_1 Create hunting rule
Author:	Florian Roth (Nextron Systems)
Description:	Detects suspicious UTF16 and Base64 encoded PowerShell code that starts with a $ sign and a single char variable
Reference:	Internal Research

Rule name:	Sus_CMD_Powershell_Usage Create hunting rule
Author:	XiAnzheng
Description:	May Contain(Obfuscated or no) Powershell or CMD Command that can be abused by threat actor(can create FP)

Rule name:	ThreadControl__Context Create hunting rule
Reference:	https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara

Rule name:	Windows_Trojan_Remcos_b296e965 Create hunting rule
Author:	Elastic Security
Reference:	https://www.elastic.co/security-labs/exploring-the-ref2731-intrusion-set

Rule name:	win_remcos_rat_unpacked Create hunting rule
Author:	Matthew @ Embee_Research
Description:	Detects strings present in remcos rat Samples.

Rule name:	win_remcos_w0 Create hunting rule
Author:	Matthew @ Embee_Research
Description:	Detects strings present in remcos rat Samples.

Rule name:	yarahub_win_remcos_rat_unpacked_aug_2023 Create hunting rule
Author:	Matthew @ Embee_Research

File information

The table below shows additional information about this malware sample such as delivery method and external references.

No further information available

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